End Node

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Node Details

• Name: End

• Type: End

• Version: 2.0

• Category: Sequential Agents

• Base Class: End

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Parameters

The End node accepts one input parameter:

Label	Name	Type
Agent | Condition | LLM | Tool Node	sequentialNode	Agent | Condition | LLMNode | ToolNode

This parameter represents the preceding node in the sequence, which can be an Agent, a Condition, an LLM (Language Model), or a Tool node.

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Input/Output

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Input

• The node requires a predecessor node of type ISeqAgentNode.

• If no predecessor is provided, an error will be thrown.

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Output

• The node returns an ISeqAgentNode object with the following properties:

  • id: The unique identifier of the node

  • node: Set to the constant END

  • name: Set to the constant END

  • label: Set to the constant END

  • type: Set to ‘end’

  • output: Set to the constant END

  • predecessorAgents: An array containing the input sequential node

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Usage

The End node is typically placed at the conclusion of a Sequential Agents workflow. It ensures that the process terminates appropriately and doesn’t continue beyond the intended endpoint.

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Implementation Details

• The node is implemented as a class named End_SeqAgents.

• It implements the INode interface.

• The init method is responsible for processing the input and generating the output.

• The node uses the END constant from the @langchain/langgraph package to signify the termination point.

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Documentation

For more detailed information on using the End node in Sequential Agents workflows, refer to the official documentation:

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Notes

• The hideOutput property is set to true, indicating that the node’s output should not be displayed in the user interface.

• This node is essential for properly structuring and terminating Sequential Agent workflows.